Oda Sandayu

After joining Arasaka, Oda trained under Goro Takemura and became a highly skilled fighter. Their shared combat experience developed a camaraderie and mutual respect, as well as an understanding that they could count on each other if needed. Oda's skills were highly regarded by Arasaka, and he was appointed as Hanako Arasaka's personal bodyguard.

2077
In 2077, Oda traveled to Night City aboard the Arasaka Corporation supercarrier Kujira, escorting Hanako Arasaka. Shortly after their arrival, the unexpected murder of Hanako's father, Saburo, turned the dashi parade into a mourning event, raising suspicions in Oda, who was already wary of the event's organization.

Afterwards, Takemura contacted Oda and requested a meeting. By then, his former mentor had been accused of direct complicity in Saburo's murder, so the meeting was arranged outside official channels. To demonstrate trust, Oda arrived alone, in a car rather than in camouflage, and listened to what Takemura and his witness, the mercenary V, had to say. As soon as he realized that V had indeed witnessed the events at Konpeki Plaza, he immediately demanded they remain silent.

Before leaving, he issued a second and final warning: while remaining polite, he threatened that he would not show the same leniency if he met any of them again.

Although Oda was well aware of the complications this event entailed, he did not interfere in the Arasaka family squabbles and focused solely on ensuring Hanako's safety.[1]

On the night of the parade, all of Oda's fears seemed to be confirmed. Speaking with Yorinobu Arasaki's head of security, Adam Smasher, he expressed outrage at the lack of adequate security measures and directly questioned Yorinobu's decisions, but Smasher dismissed his concerns.

Oda Sandayu is a cyber ninja and elite bodyguard for Hanako Arasaka, an employee of the Arasaka Corporation. He rarely leaves his charge's side and puts her safety above all other considerations—even old connections.
A student and former comrade of Goro Takemura, Oda adopted his mentor's fighting style and strict notions of duty. However, he has his own views on loyalty and honor: he is prepared to harshly suppress anything he considers a threat to the interests of the Arasaka family.
A dangerous and technical fighter, a master of close combat, he actively uses mantis blades, acrobatics, stealth, and tactical techniques like invisibility and homing weapons in battle. He's a challenging boss for the player, testing their reflexes and ability to combine cover, healing, and counterattacks.
A perfectionist and a man of duty, he's afraid of making mistakes and perceives the slightest suspicion of infidelity as a direct threat. This inner attitude makes him extremely focused, but also extremely uncompromising.
The embodiment of Arasaka's corporate discipline: he combines refined technique, cold calculation, and a willingness to act radically if necessary to protect the highest interests of the corporation and its heirs.